<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
           
        </el-breadcrumb>

        <el-card>
            <div id="main" style="width: 750px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
    import echarts from 'echarts'
    import _ from 'lodash'

    export default{
        data() {
            return {
            // 需要合并的数据
            options: {
                title: {
                text: '用户来源'
                },
                tooltip: {
                trigger: 'axis',
                axisPointer: {
                    type: 'cross',
                    label: {
                    backgroundColor: '#E9EEF3'
                    }
                }
                },
                grid: {
                left: '3%',
                right: '4%',
                bottom: '3%',
                containLabel: true
                },
                xAxis: [
                {
                    boundaryGap: false
                }
                ],
                yAxis: [
                {
                    type: 'value'
                }
                ]
            }
            }
        },
        created() {
            
        },
        //此时页面上的元素已经被渲染完毕了
        async mounted() {
            //基于准备好的dom，初始化echarts实例
            var myChart = echarts.init(document.getElementById('main'))

            const { data: res } = await this.$http.get('reports/type/1')
            if (res.meta.status !== 200) {
            return this.$message.error('获取折线图数据失败！')
            }

            //准备数据和配置项
            const result = _.merge(res.data, this.options)

            //展示数据
            myChart.setOption(result)
            
        },
        methods: {
            
        },
    }
</script>

<style lang="less" scoped>

</style>